Above is a sample of an idea produced by Access Agency for Lego. Although it is just a concept, it is probably one of the better ambient/viral tactics I’ve seen in recent years.
One thing I’m not sure about is the agency, I honestly think they’re fake. All of their work is just in concept form. They have a lot of sweet ideas, but I think they’re just waiting for some client to be stoked on their shit and start shooting bills at them.